<template>
  <div>
    <!-- 面包屑导航区 ---------------------------------------------------------->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区 ------------------------------------------------------------>
    <el-card>

      <!-- 搜索栏 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容" clearable
            v-model="queryInfo.query" @clear="getGoodsList">
            <el-button slot="append" icon="el-icon-search"
                 @click="getGoodsList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4"></el-col>
          <el-button type="primary" @click="goAddPage">添加商品</el-button>
      </el-row>


    <!-- 商品列表表格 -->
    <el-table :data="goodsList" border stripe >
      <el-table-column type="index" label="序号" width="64px" 
          align="center">
      </el-table-column>
      <el-table-column header-align="center" prop="goods_name" 
          label="商品名称"  >
      </el-table-column>
      <el-table-column header-align="center" align="center"
          prop="goods_price" label="商品价格(元)" width="95px">
      </el-table-column>
      <el-table-column header-align="center" prop="goods_weight"
          label="商品重量" align="center" width="70px">
      </el-table-column>
      <el-table-column header-align="center" label="创建时间" width="140px">
        <template slot-scope="scope">
          {{scope.row.add_time | dateFormat }}
        </template>
      </el-table-column>
      <el-table-column header-align="center"  label="操作" width="160px" >
        <template slot-scope="scope">
          <el-button type="primary" icon="el-icon-edit"></el-button>
          <el-button type="danger" icon="el-icon-delete"
              @click="removeById(scope.row.goods_id)"></el-button>
        </template>
      </el-table-column>

    </el-table>

    <!-- 分页 -->
    <el-pagination background
      @size-change="handleSizeChange"
      @current-change="handleCurrentChange"
      :current-page="queryInfo.pagenum"
      :page-sizes="[5, 10, 20, 40, 80]"
      :page-size="queryInfo.pagesize"
      layout="total, sizes, prev, pager, next, jumper"
      :total="total">
    </el-pagination>

    </el-card>
  </div>

</template>

<script>
export default {
  data(){
    return {
      queryInfo: {
        query:'',
        pagenum: 1,
        pagesize: 10,
      },
      goodsList: [],
      total: 0,
    }
  },
  created(){
    this.getGoodsList();
  },
  methods: {
    // 根据分页获取对应商品列表
    async getGoodsList(){
      const {data:res} = await this.$http.get('goods', 
                            {
                              params: this.queryInfo
                            });
      if (res.meta.status !== 200) {
        this.$message.error("获取商品列表失败！");
      }          
      this.goodsList = res.data.goods;
      this.total = res.data.total;
    },

    // 分页
    handleSizeChange(newSize){
      this.queryInfo.pagesize = newSize;
      this.getGoodsList();
    },
    handleCurrentChange(newPage){
      this.queryInfo.pagenum = newPage;
      this.getGoodsList();
    },

    // 删除操作
    async removeById(id){
      const result = await this.$confirm('此操作将永久删除该商品, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(error=>error);

      if (result !== 'confirm') {
        return this.$message.info("已取消删除。")
      }
      // 发送删除请求
      const {data:res} = await this.$http.delete(`goods/${id}`);
      if (res.meta.status !== 200) {
        return this.$message.error("删除商品失败！");
      }

      this.$message.success("删除商品成功！");
      this.getGoodsList();

    },

    // 添加商品
    goAddPage(){
      this.$router.push('/goods/add')
    },

  }
}
</script>

<style scoped>

</style>